Rudra had a very difficult choice to make in choosing the packs, it was clear that all five of them were extremely valuable and had their own compelling arguments.
By the method of elimination, Rudra eliminated Thor's pack first as he was not a axe user and did not need the copy of the famous hammer Mjolnir.
Rudra then eliminated the thunder god Zeus , simply because the pack paled in comparison to the value of other three and had no major real world bonuses.
Rudra then eliminated Micheal's pack as he made an instinctive choices of his life . He had a gut feeling that him changing the race to fallen angel would somehow mess with his innate profession the death knight and the interference will not bring him any benefits.
Trusting his gut he eliminated the Micheal's pack even though he had a great interest in wielding Excalibur Again and learning one more of Micheal's overpowered moves.