Well in that case, I'm just gonna settle with this reason:

Well in that case, I'm just gonna settle with this reason:

Well in that case, I'm just gonna settle with this reason:
TRADEMARKED!
Krogan Shaman/Human Adept say RONG SIR, RONG.Lol no. Same as warp + throw or warp + flare.
LOL! Sentinel is god in ME2! And still is too in ME3, but a bit watered down!
Uh, have you played ME2 on the hardest difficulty? Biotics and tech both do ****. I guess Reave is still useful to an extent, but the majority of enemies simply shrug off anything short of a wellplaced headshot.
And according to the game's world, the implant you get isn't based on "class" you are since class is something that is purely tied to gameplay and does not exist in the world, rather the implant you get is based on whatever was available when the implant was installed.
That's why Kaiden uses the V2 chip whereas Shephard, regardless of "class" uses the less powerful V3 regardless of whether she is a Vanguard or Adept. LIkewise the rebuilt Shephard would also have been given the best chip available, since there is absolutely no reason to use a weaker chip. Jack uses a v4 if memory serves me right, and she has plans for creating a v5 chip that you get installed once you research it in ME2. And that's the chip you use regardless of whether you are a Vanguard or Adept.
But the reason why one is more powerful than the other is simply because Bioware only lets you use specific skills on each. There really is no ingame reason why a biotic would only learn charge or warp and not both.
But regardless of that, no Biotic is more powerful than Jack was during her first cutscene when she tore open 3 mechs like they were made of tissue paper. Sadly she never uses that level of biotics ever again. In fact she's probably the weakest squadmate in ME2. Or if not weakest, tied for weakest, even though all my ME2 squadmates usually died off fairly quickly.