Amphetamines work on the central nervous system, They are not a "Preforming enhancing drug" Steroids were specifically developed and designed by drug companies to make the body heal faster and better, when there is no healing necessary, they just make you bigger,stronger and/or faster.Saying Amphetamines compare to Steroids is about the same as NyQuil compares to heroin.
There is no comparison
What always amazes me is how a simple topic like when should I turn off historical stat modifiers to avoid the steroid era can turn into a cluster^%$# discussion like this