I've noticed this a fair bit last season and this. I didn't pay much attention in England as the games came thick and fast anyway but in Germany there is reasonable rest time so my players aren't always at deaths door. I think this is why I went down with Derby County in season one (points deduction being the obvious reason) but when your back four are all over 33+ years of age, they were doomed by the hour mark on a regular basis.
Small differences but makes it rather realistic.