In 2002 the gunnels were narrowed, the floor sunk a few inches and the sloped transom was discontinued, so both those models should have extremely similar interiors. The hydrogate wasn't ever an option on previous generation 210's. The 05 may have the Excalibur while the 02 will probably have a GT40 or might have the GM Apex. No issues either way. If you're looking to justify $10K difference, you'll have to look at overall condition, engine hours, and overall perception at how both boats were kept. I'd look at the trailers, too.