Almost! Brute secondaries are less powerful than Tank primares, base Tank Granite gives 50% resistance and 20% defence compared to 37.5% resistance and 15% defence for Brutes.
golden tip to take down a GA, -recharge -slow, but most of all -end powers 
100% succes
(dont forget to toggle drop rooted first :P)
50)Sinergy X/(50)Mika.
(50)MaceX/(50)Encore
Sign the petition, dont let CoH go down! SIGN!
Aye the disadvantages of granite are huge too...it's unlikely the tank can kill you easily, but you need some specific tactics to hurt them 
Detoggles or end drain cripple granite completely...and the less said about -Recharge powers the better... 
or your friendly neighbourhood dom running domination to drop that precious granite of his
"god, how many devs did hami have to sleep with to get ED?"
Total Cat @Stagefright
yesterday their was a PvP event on vigilance.(it was sooo grooovy)
in warburg i saw a thing that amazed me.
i was in the base next to the helicop and i saw a atank in stone armor running throug the base (at the speed of an iceberg ) no less than 8 villain were hitting him trying to stop him. nothing seemed to be able to take him down. at one moment he took 2 AS and then hop he healed for 1200 life O_o and all was to begin again. he was hiited continualy for 2 minutes and at the end the only thing that saved his target it was that i tp him back again and again.
so is the stone armor of brute the same as that?? O_o