It certainly isnt 50. Been watching PvP videos to decide whether to go Commando or Vanguard. Also for lolz watched a Jugg/Guardian video. They are hitting for 6-7k crits on an attack thats instant. Snipers/GS also seem to get some sick crits as well. Then every Commando video I watch Grav round hardly tickles anyone. Most crits are around 2500 with the rare 3K and has a cast time. So if not at level 50 when do they become an actual DPS class?
Well I usually just shoot off a couple grav rounds rather than 3 to save on ammo and time. I usually pop off FA and that hits for about 3500 each hit. Then followed by HiB which hits for around 4k and DR which hits between 4.5k and 5k. I can get some nasty numbers out there being a commando. I get bigger numbers with gunnery than I do with Assault.