i have not checked the sacks/game/team so take my advice with a grain of salt.
I think it easily goes over 4. but of course, before i would bet that, i would need to check the stats/sack/player and if the players are injured or healthy..
Gerrard has been sacked 38 times this season, averaging just under 3 a game. that number was thrown off however because of their wk 1 loss to the titans when he was sacked 7 times. the last 5 games (TEN/MIN/HOU/CHI/GB) he's been sacked 16 times, which is over 3 a game. Those Ds are a bit more dominant than the Indy one, but I'd say 2 is probably safe. Peyton has 13 sacks in 14 games, and with jeff saturday back in the OL, I dont see him being sacked more than once. Honestly I'd lean towards the under, but I expect 4 total. I expdect Gerrard to dump the ball to MJD the majority of the night, or throw quick screens (or picks haha).
also, several of jax's best-performing defensive players when it comes to sacks are either hurt (probable) or on the IR. Mathis and Freeney do the heavy lifting for the colts when it comes to sacks, and i expect mathis to do his usual beasting. Freeney is questionable, though, and if it doesn't play i doubt gerrard goes down more than 3 times. peyton goes down probably once.