Hmm, since JM had played an earlier version of the pack, he may have used a direct-drop backroute to Level 10 (no longer possible), and thus concluded that the level was easy. Or, maybe he really did figure it out right away and managed to pull it off easily... He has yet to post/PM his solution so I don't know.
However, I am fairly confident that JM did not pass Level 8. This level is the red flag for me as to whether someone has actually played through and passed the levels or just thinks they know what the solution is. If you've played and passed the level, you know what I'm talking about.
For MC Marshy's review of Level 9, it could very well have been a backroute, I can't really comment without more information, but I found it funny that the only good thing to be said was that the level is possible (shouldn't that be a given?) :-(
One rule for this thread that maybe should be brought up is that you cannot review a level unless you have beaten it! (As in you got enough lemmings in the exit(s) to pass the level...) It seems obvious enough, but I have a suspicion that this hasn't always been followed. (Exception: the level is verifiably impossible. We haven't run into one of those yet, and likely won't.)