I just got the big buddy up 2 and......let me just say it is the most powerful weapon in the game.it takes out any type of armor player in 1 hit and if used right....its better than the storm hammer.i will tell you the stats
Damage:19 but that is wrong
Fire rate:40
Capacity:5
Mobility:95
It's blast radius is a very big one btw
Best gameplay with this weapon is shooting it switch guns switch back really fast and shoot again.Trust me you won't regret buying this
Price:130 coins on sale for buying the gun.up 1 is I think around 160 on sale and up 2 is 65 gems on sale and that's pretty cheap for gems so I would recommend getting it but it does involve some skill.so I think this should be very close to the number 1 Weapon.