Every time you use a hero that is not yet maxed, he should gain experience every time you use him (e.g. for farming). It should be a percentage from the XP that you gained and ti should take into account if you win or loose.
Every time you use a hero that is not yet maxed, he should gain experience every time you use him (e.g. for farming). It should be a percentage from the XP that you gained and ti should take into account if you win or loose.