The problem with BL2 is we never see the original Vault Hunters using their full abilities while fighting alongside the new Vault Hunters. Never mind using any actual equipment that is noteworthy.
If Brick had access to all of his abilities alongside having the Love Thumper or some other roid shield we should be struggling just to keep up with him. Both Slab town and Heroes Pass would be a snoozefest if he could use rocket launchers alongside his punching.
Mordecai…well…everything would be dead. When he flips his lid after WEP is when we we get to see him use his full potential to what he could do in the past. Wherever he spawned would just be an Easter Egg hunt with picking up all the loot dropped by all the enemies he has killed.
Lilith does not use any weapons so…yeah. If she were using her Borderlands 1 abilities it would of been a Seizure Procedure when she was fighting with all the Phaseblasting and SMG fire.
Roland, in my opinion, is the king of grenades. Give him slag, lobbed Bonus Package, and a bag of beef jerky and just watch the fireworks. His Scorpio turret is not as powerful as Axton’s but Roland can keep tossing it out indefinitely with all of his skills and what with its ability to heal and regen ammunition it evens the scales.