If it's just to say; she isn't as strong as a solid class 100 Hulk, did the writer mean that despite being notably stronger than Hercules that she was still weaker than Thor?
Pretty fair to assume the writer wasn't talking about the times when Hulk is going all "World Breaker" or Banger McCrusher on us.
So work under the assumption that it means a reasonably angry Hulk but not notably so. So essentially a mid-high tier class 100 Hulk?
Was Jupiter-Suit She-Hulk just a low tier class 100?
You are coming to illogical conclusions because you are starting with the illogical assumption that Slott views a typical Hulk as merely a "solid" or "mid-high tier" class 100. I don't think that is true for the majority of writers these days, and it's certainly not true for Slott as Strange points out. Slott made it very clear in-continuity that a bog-standard savage Hulk was notably stronger than Hercules. It's not difficult to see how Slott could consider Jen to be stronger than Hercules but weaker than Hulk when we know for a fact that he considers a typical Hulk to be substantially above Thor/Herc level in pure strength.