As Mac said, it assists with estrogen control but does not act as an anti-E. It leads to sub-normal E2 when used by itself (like Deca) but it is an aromatizable androgen.
It can certainly be used with 250 - 300 mg test as the primary aromatizable androgen in a bulking/off-season cycle and will promote a drier look than high test.
Most guys prefer high test though. You just feel good on high test. And most guys realize that deca is just so much more anabolic as Mac indicated as well.
EQ is not the best tolerated drug, even though women use it, it often causes acne and anxiety if you've never used it, just a risk to bear in mind; it's one of the less tolerable injectables in popular use.