The online database is for 2.5 only .. there is no way to import ratings from the online database into another version of the game. As been said in two to three threads now ... Manny will not be rated in a new class until he has won a few fights in that weight class.
What you quoted was posted in 2004 and was for a previous version of the game. 2.5 handles importing of fighters differently and uses an online database for fighters. Manny is rated at JLW in the new version. I would suggest you upgrade.
Link to the current online database
Fighterlist
you can see ratings for fighters and enter them by hand but once again I would suggest you upgrade to the new version.
2.5 can be purchased here
https://www.elicense.com/ootpdevelopments/store/