On a test stand, the engine is drawing air without an inlet obstructing it. So, the quoted 20,800lbs for the TF-30 is higher than when installed in the aircraft at static, same with the F-110-GE-400's 27,600lbs. The Wikipedia page actually just copies the information from the F-14D's NATOPS regarding the F-110-GE-400: 23,400lbs installed at a stand-still, 30,200lbs installed .9M.
Now, the nice thing is that Google Books has a portion of the F-14A's NATOPS manual that was released to the open source world which you can buy on Amazon, including the section on thrust. Installed, the TF-30P-414 produces 17,077lbs at a stand-still (10,875lbs at mil power). The NATOPS doesn't discuss thrust at .9M at sea level, but since about 1975, the TF-30's thrust in that region has been published in the open-source world (TAB Aero Series 25, Grumman F-14 cites it). The TF-30's installed thrust at .9M is approximately 28,000lbs at sea level (not exact).
So, at 0.0M and 0.9M at sea level, the TF-30 does: 17,077 - 28,000lbs
The F-110 does: 23,400 - 30,200lbs
The thing is, these are single-points of performance. Engine thrust is dynamic and is affected by airspeed, altitude, g, computer controls, atmospheric conditions, etc, so having two points separated by .9M at a common altitude isn't going to give you the full picture of the engines' relative performance.