Does anyone else feel that the Astartes Heavy Bolter is a bit too powerful? With 2d10+10 Pen 6 Tearing and capable of scoring a maximum of 10 hits, that is a lot of damage potential. Now, this isn't so bad against "normal" targets like hordes or Chaos Space Marines, but when you start getting the big things like Daemon Princes, Tau Crisis Suits, it gets a bit silly. I'm having a hard time seeing why a devastator would ever want to give up his Heavy Bolter, which is standard issue and available to him every mission for free , for any other weapon.
Sure the Lascannon or Plasma Cannon (on Maximal) can do more damage, but they're only a single shot, so easily dodged by many enemies. Meanwhile, with a decent BS in the 40s or low 50s, between the various bonuses to BS a Dev will get, he's likely to score quite a few hits with the Heavy Bolter, which enemies will have a harder time dodging since they can only dodge one hit for each DoS. This ensures at least some damage will be done, and that 2d10+10 Pen 6 Tearing per hit is pretty hefty for "Some" damage. Plus if you get a lot of hits and the enemy fails their dodge roll (or one of your allies already forced it to take a dodge) you're tearing it apart with a ton of nasty hits. And this is ignoring specialty bolt ammo, which can get pretty crazy and again begs the question of why a Dev would want to pay 30-35 req for a Lascannon, Multi-Metla or Plasma Cannon when he could instead get a suspensor, motion predictor, and/or multiple magazines for Kraken rounds or whatever other specialty ammo for the Heavy Bolter.
If vehicles were a threat in the game, things might be a bit different, as even the lowly rhino with it's 25 front/side armor and 25 structure points is moderately resistant to H.Bolter fire. However against the enemies we're given in the book, I really don't see much a point in taking anything but the H.Bolter.
Maybe I'm not seeing something, or maybe we do need enemy armour to make the Devastator's weapon choice a bit more difficult.