I REALLY like my cousins 372xp. In fact, recently, I made an offer on one that an AS member was selling (he didn't take my offer).
Like like SawTurd, you pay too much attention to what's on paper. Husky lists the 372xp at 13.9 lbs. But this is real world:
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Also, do you cut with a dry machine? No fuel or oil?
620p:
fuel: 21.8 oz.
oil: 10.1 oz.
372xp:
fuel: 26.03 oz.
oil: 13.53 oz.
Fueled and oiled up, ready to cut, with the same b&c the 372xp will weigh 14.5 oz. more. So, no, they don't weigh the same in the real world.