I think it still depends. More test can also result in more estrogen. There is selection bias in athletes who dope because they're the ones who happen to respond positively to it.

There must be a graveyard of athletes who tried doping and it made them worse lol.

It will make you stronger period.

There are side effects, problems, long-term consequences...

But testosteron blood levels absolutely do regulate muscle growth.

that's why most bodybuilders take other drugs to counter the estrogen, like arimidex or aromasin. It definitely makes you bigger and stronger.