from what i remember a 4 gets its power from revs thats why most red line at say 14k so to get the bike moving fast you have to rev the nuts off it.
A V usally relies on the power coming from the stroke/bore which gives it more torque so it might red line at say 5-8k depending on bike manufacture,so you can change gear earlier eg short shift aint got to give it the revs to get the bike moving and usally got more mid range punch for overtaking.
A 3 is somewhere in between.
Had a Thundercat for 2years done 28k on it but sold it cause it was to revvy with a red line of 14k
Some one else prob come along and add to this
My TDM is a parallel twin but the firing order is 270' rather than 360'as norm which gives it the torque of a V but the TDM redlines at 8k.
