MCW
Somebody's talking crap here & it ain't the tree!
Your point isn't hard to understand at all, but what really is "just as well"? I don't agree that a 5100S will get the job done "just as well" as a 346xp, the difference isn't really large when felling or bucking (or blocking) - but much larger when limbing trees with lots of limbs.....
The inboard clutch of the Dolmars no doubt is the main culprit - it changes the balance and feel of the saws quite a lot. This obviously is the case with the MS261 and 241 as well.
If someone doesn't fell, limb etc in the woods - but just are blocking logs in the yard, these differences does of course matter a lot less.
Regardless of whether a saw feels better because of it's inboard clutch or not means little as far as production goes.
For example my Husky 353 thumped my MS261 in limbing not because of balance but simply because of a far better throttle response.
My 5100-S thumped both my 353 and MS261. Sadly all 3 of these saws have since been sold and replaced by an MS241 and 550XP. Out of the 3 sold saws the only one I regret selling was the 5100-S.
On a side note my new 550XP will thump any other 50cc saw I've used in throttle response AND power. It's only seen 2 tanks so far.
Also don't doubt the abilities of the 42.7cc MS241. It is an excellent little saw and no doubt helped substantially by the M-Tronic. I was running it on the weekend with a 16" 3/8"LP bar and in anything up to 8" it was right there with the 550XP and 18" .325" setup (I had to drop 4 trees for a customer). In cleaner wood it is a lot faster with the 3/8"LP and 7 tooth rim setup - actually surprisingly fast!
Wayne (gmax) gave it a run as well and was equally impressed.