Now I know paper figures are by no means everything, but I have been looking at them none the less. It seems to be, the 070 has significantly more torque than the 076, and the same as an 088 (well, 0.1Nm less), while the 090 is quite a bit higher. My sources are the test reports in the reference
Jonsered Chainsaws, Page 56
Jak 250B Tree Shear For 5 to 12 ton kg excavators (11000-26455 lbs)
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Sledrat's Greasey Lil Chainsaw thread, Page 28
Huztl FarmerTec 070 Build Thread with upgrade info and completed saw, Page 30
The 72EXJ093 is the current replacement for the Oregon® part 72EXJ093G, featuring a 3/8 pitch, .050 gauge, and 93 drive link. Its full skip and full
72EXJ093 3/8 pitch .050 gauge 93 drive link Full skip Full Chisel
Thats me! Arborist, Chainsaw & Tree Work Forum
Husky with GB CN40 Bar - Powerful Chainsaw for Tree Felling
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Sledrat's Greasey Lil Chainsaw thread, Page 28
Jonsered Chainsaws, Page 56