billygoat.2008

Can be found here in canada http://www.ebay.ca/itm/Dewalt-DCF889B-20V-Max-Cordless-Lithium-Ion-1-2-in-Impact-Wrench-Detent-Pin-/261064891390?pt=LH_DefaultDomain_2&hash=item3cc8ae1bfe#ht_3005wt_1271

For example DCF889B rated 300 vs 2663-22 rated 450. does Milwaukee rate it max tq? Don't get me wrong I have the 3/8" 20 max impact and I am very impressed. But I'm a mechanic and the extra 150 ft lbs would be useful any thoughts/insight is greatly appreciated.

I noticed the 1/2" Impacts are rated lower than Milwaukee is how they are rated or is the milwaukee just stronger?