people. opinions?

[cyrouise]

helo all. just a simple question here. hope u can give me your best. i cant get access to benchpress so i do weighted pushups instead. i weight 170lbs/77kg and i do pushups with a 120lbs/55kg person standing on my shoulder blades. so the whole 55kg weight is on me. i can do 12 pushups in a row with 120lbs/55kg person standing on my back. all the way up all the way down. and i think, when doing pushups, i push about 99lbs/45kg of my 170lbs/77kg bodyweight. is it? combined with 120lbs/55kg person standing on my shoulder blades, its the total of 219lbs/99kg. for 12 reps weighted pushups in a row. if it correlates to bench press, is it pretty much the same? can u please estimate and explain to me? and what do u think of this achievement for someone who weights 170lbs/77kg. stands at 5'11. hope u can help. thanks.