Question: What project was finished at a later date, Panzer VII Lowe or Panzer VII Maus?

Context paragraphs:
Albert Praun: Praun served during World War I.  He was retained in the Reichswehr and then served in the Wehrmacht; between 1935 and 1940 he commanded signals units.  In 1940 he was then appointed Chief Signals Officer of Panzer Group Hoth and Panzer Group Guderian in France.  He was then posted to the Eastern Front where he served as Chief Signals Officer of the 2nd Panzer Group.  He later was the commanding officer of the 4th Panzer Grenadier Brigade and then of the 18th Panzer Division, and the 129th and the 277th Divisions.

Dictatus papae: Dictatus papae is a compilation of 27 statements of powers arrogated to the Pope that was included in Pope Gregory VII's register under the year 1075.  Some historians argue that it was written (or dictated) by Gregory VII himself; others argue that it has been inserted in the register at a later date, and that it had a different origin.  In 1087 Cardinal Deusdedit published a collection of decretals, dedicated to Pope Victor III, that embodied the law of the Church – Canon law – which he had compiled from many sources, both legitimate and false (see Pseudo-Isidore).  The "Dictatus papae" agrees so clearly and closely with this collection that some have argued the "Dictatus" must have been based on it; and so must be of a later date of compilation and insertion in the papal register than 1087.

Panzer division: The term "panzer division" (German: "Panzerdivision" ) as commonly used in English language refers almost exclusively to the armored (tank) division in the army branch of the Wehrmacht and of Nazi Germany during World War II.  The panzer divisions were the key element of German success in the Blitzkrieg operations of the early years of the war.  Later the Waffen-SS formed panzer divisions, and even the Luftwaffe fielded a panzer division, the Herman Goring Division.  The term "Panzerdivision" is still used in today's Army of the Bundeswehr (for example 1.  Panzerdivision).  In German speaking countries the term is not immediately associated with the Wehrmacht as it is in English speaking nations, as the word simply means 'armored division' and has no additional connotation.

Panzer Dragoon Orta: Panzer Dragoon Orta is a rail shooter video game published by Sega for the Xbox.  The game was released in Japan in December 2002, January 2003 in the United States, and three months later in PAL territories.  It is the fourth and final game in the main "Panzer Dragoon" series.  After the release of the previous "Panzer Dragoon" game, "Panzer Dragoon Saga", Sega disbanded Team Andromeda, which had developed every game in the main "Panzer Dragoon" series.  Many staff joined Smilebit, which went on to develop "Panzer Dragoon Orta."

503rd Heavy Panzer Battalion: The 503rd Heavy Panzer Battalion (abbreviated "s.Pz.Abt.  503") was a German heavy Panzer "Abteilung" (a battalion-sized unit) equipped with Tiger I tanks and Panzer IIIs.  In 1944, it was re-equipped with the new Tiger II.  The battalion saw action on the Eastern and Western Fronts during World War II.  As with other German Heavy Panzer Detachments, it was normally not assigned to a single corps, but shuffled around according to war circumstances.  Later the battalion became part of the newly formed Panzer Corps Feldherrnhalle as the Feldherrnhalle Heavy Tank Battalion.

Panzer VII Löwe: The Panzerkampfwagen VII Löwe (Lion) was a design for a super-heavy tank created by Krupp for the German government during World War II.  The project, initially code-named VK 70.01 (K), never left the drawing board, and was dropped in 5–6 March 1942, in favor of Porsche's heavier Panzer VIII Maus.

Matthias Kleinheisterkamp: Matthias Kleinheisterkamp (22 June 1893 – 29 April 1945) was an SS-"Obergruppenführer" during World War II.  He commanded the SS Division Totenkopf, SS Division Nord, SS Division Das Reich, III SS Panzer Corps, VII SS Panzer Corps, IV SS Panzer Corps, XII SS Army Corps and the XI SS Army Corps.  He was a recipient of the Knight's Cross of the Iron Cross with Oak Leaves.

Panzer VIII Maus: Panzerkampfwagen VIII Maus ("Mouse") was a German World War II super-heavy tank completed in late 1944.  It is the heaviest fully enclosed armoured fighting vehicle ever built.  Five were ordered, but only two hulls and one turret were completed before the testing grounds were captured by the advancing Soviet forces.

2nd Panzergrenadier Division (Bundeswehr): The 2nd Panzergrenadier Division ("2.  Panzergrenadierdivision") was a West German mechanized infantry formation.  It was part of the III Corps of the Bundeswehr, which also incorporated in 1985 the 5th Panzer Division and 12th Panzer Division.  III Corps was part of NATO's Central Army Group (CENTAG), along with the Bundeswehr's II Corps and the American V and VII Corps.  In the wake of military restructuring brought about by the end of the Cold War, the 2nd Panzergrenadier Division was disbanded in 1994.

12th Panzer Division (Bundeswehr): The 12th Panzer Division (German:" 12.  Panzerdivision") was a West German armoured formation.  It was part of the III Corps of the Bundeswehr, which also incorporated in 1985 the 5th Panzer Division and 2nd Panzergrenadier Division.  III Corps was part of NATO's Central Army Group (CENTAG), along with the Bundeswehr's II Corps and the American V and VII Corps.  In the wake of military restructuring brought about by the end of the Cold War, the 12th Panzer Division was disbanded in 1994.

Supporting paragraphs: Panzer VII Löwe Panzer VIII Maus
Answer: Panzerkampfwagen VIII Maus