I'm pretty sure there was almost one year between the whole Titania fight and the conflict with the Time police, so it's not like she's necessarily stayed the same (unless she continued to lift weights during the whole time).
From what I've seen, She-Hulk doesn't seem as strong as she was at the end of the last season. Her muscles don't look as big as before and I haven't seen her do anything that suggests that she's in the same strength class, which is why I believe she's back down to her old strength level.
But I haven't been keeping up too well with the current season so anyone could probably prove me wrong.