these guys are right. you have to remember that your body works to adapt to whatever you are doing to reduce the stress, but this works both ways.
if you bench press every other day, you will certainly build those muscles up pretty quickly, but at the same time once your body has gotten used to lifting every other day it will reach an equilibrium and stop growing. this is where the whole “keep the body guessing” saying comes from. i would recommend mixing it up a little more than every other day, but for a short period of time it wouldn;t hurt.
another thing you might want to think about doing if you are trying to build size or strength in your chest, is to simply do 100 pushups every day. you don’t have to do them all at once, you can break them up into sets at various points throughout the day (i.e. 10 in the morning after you wake up, 10 more after breakfast, 10 before bed, etc etc), but make sure you do at least 100 every single day. you’d be surprised at the results you can get with this simple plan.