As stated, I think it fits right in between the 228 and 232. However, you can't really compare the three because they were designed for different audiences.
The Parker 2310 is built for one thing...fishing. That's why the helm is slid farther forward. It increases the amount of usable cockpit space. That being said, the cabin is still HUGE for a 23' boat. It is also not a true walkaround, but more of an express is you ask me. There are no recessed walkways which translate to more room at the helm and in the cabin. All new 2310s have a 21 degree hull and you can get them with a transom mounted OB or a bracketed OB. The upgrade from a F225 to an F250 will run you about $900 and is worth it according to the dealer I spoke to.
23', 8'6" beam, 4288 lb. dry weight. That's almost the same weight as a Grady 232S in a smaller package.
I think a 2310 probably does rides better than a 228 and nearly as well as a , but you will not feel that way because the helm is farther forward.
The Gradys incorporate more creature comforts because the target buyer is the family fisherman. So, you get styling and creature comforts that are a bit more appealing to buyers looking to please wives and kids. In my opinion, if Grady redesigned both the 228 and 232 to be more like the Parker (ditch the recessed walkway) they would be much better boats. I doubt you would lose any safety during bow access becuase the walkway would be wider. The cabin size could be increased as well, but you would still lack the cockpit space that the Parker has.
Different strokes for different folks. If I wanted styling, I'de go for the Grady. But if I wanted fishability and build quality, Parker wins hands down in my book.