Result Is quiet Strange A/C to Me....!!
Mods Are Not So Much On D To Give 20v And BT that Much Gap
That BT Might Not Be running As It Have To....!! 
Who Knows How's The Engine Condition From Inside ....20v Need Lot Of Attention In Order To Run Perfectly....!!
Power To Weight Ratio Also matters And Tyres Too...!! Some Light Weight Rims Can Also Make Much of Difference..
Overall Its A Blunder Of Mind Games 