I really hate to be negative, its always nice when elf beats mordor, but this is definately not HOW to beat mordor. This how to get lucky vs a careless player.
I wont go to indepth into this, but mordor did not expand very well, and was in my opinion, very passive especially with a 3 orcpit start ( which is why its a surprise when he forgets about eagle power) Had mordor not wasted money on the 3 or 4 towers he tried to create on fort *which should have been made earlier* then he would have won. All in all he played as if he were men vs elf trying to pitch battles with orcs were some sort of soldier would prove more useful. Orcs have two basic uses on 1.6, one is to delay attackers and provide minimal damage, and the other is to spam at the resource buildings which they are truly effective against. On 1.6 you can NOT try to use orcwarriors to kill the lorien archer, you simply wont get very far that way.
On the other hand Elf, you did not expand either. Its one thing to have trouble expanding vs a very aggressive mordor, but his attacks were always concentrated army vs army battles, and of course what orc can stand against an elf? He fed you crazy powerpoints, and then you waste tom bombadil, but your lancer control was also quite lacking. On no less than 3 or 4 occasions you would run pikes over repeatedly.
All im trying to say is that if you call this the way to beat mordor, then you are simply saying elf has to get lucky vs a CARELESS mordor, because in fact, that is what you were. (Not to mention you really have to play well to beat mordor, and luck is no small part in winning in my opinion.)
A pretty good example for an elf to see how can they defeat their worst enemy, mordor.