At the lvl. 50 battle factory, why are all Pokemon LC or NFE?

Question

I prefer battling with lvl.100 which were all fully evolved but I decided to do a lvl.50 battle and they were all LC and NFE. Any explanations? most pokemon are done evolving by lvl. 50 so why not have fully evolved pokemon?

Answer 1

I'm answering this because the previous answer is actually wrong. There can be final evolved Pokémon in the Level 50 Battle Factory in Platinum. You just have to have your winning streak higher than 7 for you to be able to choose final evolved Pokémon. This can be proven by this:

The list of Pokemon you'd normally receive in each round's draft is as follows, using index numbers from this list:
Round 1: 0 IV Pokemon of very weak species with only 1 possible set (Index 1 to 150)
Round 2: 4 IV NFE or weak fully evolved Pokemon using the first set of their species (Index 151 to 250)
Round 3: 8 IV NFE or weak fully evolved Pokemon using the second set of their species (Index 251 to 350)
Round 4: 12 IV fully evolved (plus Porygon2 and Rhydon) non-legendary Pokemon using the first set of their species (Index 351 to 486)
Round 5: 16 IV fully evolved non-legendary Pokemon using the second set of their species (Index 487 to 622)
Round 6: 20 IV fully evolved non-legendary Pokemon using the third set of their species (Index 623 to 758)
Round 7: 24 IV fully evolved non-legendary Pokemon using the fourth set of their species (Index 759 to 894)
Round 8+: 31 IV fully evolved and legendary Pokemon using all possible sets for their species (Index 351 to 950)

Basically, Round 1 is battles 1-7, Round 2 is battles 8 - 14, and so on. Therefore, you can get final evolved Pokémon in the Level 50 Battle Factory in Platinum, but you have to have a winning streak of 7 or higher.

Source

Answer 2

Because Game Freak designed the Battle Tower like that. Not much can be said or done on it.