Answer based on context:

In week 13, the Lions traveled to Cincinnati, Ohio for a non-conference contest with the Cincinnati Bengals. Detroit got an early lead in the first quarter with a 54-yard catch and run by Calvin Johnson. The Bengals tied it up in the second when Jonathan Fanene caught a tipped Matthew Stafford pass and ran it back 45 yards for a touchdown. Cincinnati then took the lead and didn't give it back when Chad Ochocinco caught a 36-yard TD. The Bengals closed out the first half with a 44-yard field goal by Shayne Graham. In the second half the Bengals scored 2 more field goals, from 39 and 23 yards respectively. The Lions scored the game's final points late in the 4th quarter with a 2-yard run by Kevin Smith. The Lions went for a 2-point conversion but failed.

How many more home runs did Trent Lockwood score when compared to Kelley Gulledge?
6