User blog comment:Mckrongs/Official Nintendo Magazine talks about Monster Hunter 3 G Again/@comment-4212769-20120211013027/@comment-198.20.32.127-20120504170419

Technically 3G is the sequel to Tri, not portable 3rd. Portable 3rd really isn't all that related aside from a few similar area and the addition of switch axes and some of the same monsters. Monster Hunter Tri 3G has Lagiacrus and underwater combat again, unlike portable 3rd.