yar bikes are altered to juice out all of the perfirmance .... with that said if 70 is tweaked to great xtent , then u can say its near to 125 ,now if u consider this damaging then think in another way ...think of 125 as is normal and after some time it needs tuneup to restore all of its settings ..say brakes, balance ,etc..so at that point its essentially a tweaked 70..but still it would be working acceptiblly possibly due to the drivers ability ...because he adjusts dynamically with any change in its paramerters... and same is the case with modified 70....
moreover jahan tak batameez driving ki baat ha tho 125 is the most abused two wheeler .. needless to say all bike stunt showkeen prefer 125 over 70.,,,so it is the most abused one but it doesnt mean that all 125 users are batameez ..or does it ?
tweaking it to give more hp is very helpfull in some instances where quick reaction is needed... so altering is a need not an abuse..
most people think of most things in wrong perspective... unfortunately in thir common life..
thanks and hope every one thinks with right perception,,,