Is the meter set on LED mode? It should read less than 2000 in the sunlight. Those Giesmann fixtures should be putting out 700-1000 @12" under the fixture.
You also might want to check those fixtures on an amp meter, none of those readings make sense.
Check out these par #'s for the 250 infiniti:
http://www.reefcentral.com/forums/showthread.php?t=1684462