Omega

NWA World Heavyweight Championship: No other professional wrestling championship has been around longer, and has more prestige than the NWA World Heavyweight Championship.

WWWF/WWF/WWE Championship: This championship has a lot of prestige, but not as much as the above championship does. In fact, the only reason this championship exists is because Vince McMahon Sr. broke away from NWA.

WCW/WWE World Heavyweight Championship: It has been around since 1991, and has had a lot of major names hold it.

Note: If you believe the WWE World Heavyweight Championship is an entirely different championship than the WCW World Heavyweight Championship, then switch the positions of the WWE World Heavyweight Championship & ECW/WWE ECW Championship.

ECW/WWE ECW Championship: It has been around since 1992, but was inactive for quite a while.

ROH Championship: It has only been around since 2002, hence the low ranking.

TNA Championship: If this was still the NWA-TNA World Heavyweight Championship, it would be much higher on the list, but it can't get much higher with only a history of three champions.

In my opinion, the longer a championship has been around the more prestige it has. Hence my list.