Those stats are for warhammer's tabletop miniature/strategy game (e.g., warhammer 40,000K) - which, though, i've never played before, the stats i believe do not really translate into ad&d or other rpgs.
as for stats, sorry, i don't have the info - not sure if the d&d based games were ever allowed to produce LOTR material (licensing issue). Instead, the untill-recently defunct but-soon-to-be-born-anew Iron Crown Enterprise (I.C.E.), which sold Rolemaster and Middle Earth Role Playing (MERP) had the license for tolkien material (though they no longer have it). I have the material but don't believe it will be useful for you, since the system uses 10 character attributes which are based on percentile dice (d100)
a page to check out is the forums on the Guild COmpanion site, which has discussions on the old merp stuff, rm, and some threads about converting to the new D&D
www.guildcompanion.com
good luck
oaxaca_dan