Killer Mike Supports Usher and Alicia Keys' Steamy Super Bowl

Grammy sweeper Killer Mike was loving every minute of Usher's Super Bowl halftime show ... because it put his beloved Atlanta's culture on the biggest stage!!!

TMZ Hip Hop caught up with Mike Monday in NYC ... he says he caught the big game during a flight yesterday, but Usher still had him A-town stomping at cruising altitude.

From the Magic City stripper poles and the custom Air Jordans to Ludacris and Lil Jon's inclusion, Usher made sure to represent ATL to the fullest, but it was his steamy duet with Alicia Keys that stole the show.

AK's husband, Swizz Beatz called out trolls who tried to read more into the performance than it was -- and Mike agrees.

The Run The Jewels rapper even gives Ursh the greenlight to dance with his wife nice and slow -- a little jealousy goes a long way in establishing security, at least, according to his logic.

Now that he's secured Rap Album of the Year with his "Michael" LP, he plans on keeping the train full steam ahead ... furthering the album's trilogy