After a tough road loss to the Jets, the Raiders went home to take on the Texans.  The Texans would dominate the first half scoring in both the first and second quarters:  Ryan Fitzpatrick found J. J. Watt on a 1-yard touchdown pass for a 7-0 lead followed by Arian Foster's 5-yard touchdown run for a 14-0 and lastly Randy Bullock kicking a 33-yard field goal for a 17-0 lead at halftime.  After the break, the Texans went back to work in the 3rd quarter as DeAndre Hopkins caught a 12-yard touchdown pass from Fitzpatrick for a 24-0 lead followed up by Bullock kicking a 39-yard field goal for a 27-0 lead.  The Raiders finally got on the board in the 4th quarter as Darren McFadden ran for a 1-yard touchdown making it a 27-7 game.  The Texans moved ahead as Bullock kicked a 46-yard field goal for a 30-7 game.  The Raiders scored the final points of the game as Derek Carr found James Jones on a 9-yard touchdown pass for a 30-14 loss.. How many more touchdowns did the Texans score than the Raiders?