Airtel — difference in speed in top up and normal internet packages

Address: Bangalore, Karnataka

I don't understand whatbstrategies are being used by airtel. I have recharged my prepaid number with 400 something plan which gives 1 g b per day for 70 days in which till date i havw seen max 10kbps speed... If that 1 gb gets over and i have urgent stuff to be done i do a top up of 2 gb for 3 or 4 days...in that top of i see even 9 mbps speed and in this case area does not matter... I am sitting at the same place where i used the normal plan.

Airtel, can you just elaborate why is this?