Firstly its different, most anglers use a 15/16mm bait and its something the fish see everyday. I would only use a 22mm if fishing with the same size baits as a whole,no doubt the carp will be able to get there fill quicker than they would with smaller baits.I wouldnt for instance use a 22mm bait if fishing over particle that dosent seem right to me as i prefer to match the hookbait with what im fishing over.
Do i think useing a big bait will get me bigger fish,absolutley not..how many times have you caught a lump on say a piece of sweetcorn for instance..carp as we know are greedy but chucking out a nice big bait with a size 6 or even a size 4 hook would give them more trouble to deal with,and it goes against the grain,its also easyier to catapult or use a throwing stick getting these bigger baits out.
Ive had success with the 22millers fishing in open water...its something i wouldnt use in the margins.
So being different can only be good,if you fish the same as everybody else you will probauly get the same results.