1. When using this, can I add two model's attack and two other model's damage?

2. And also, does the character share the teamability with himself?

Yes, you may use the Perplex on different combat values. From the Marvel FAQ:

When affecting friendly characters with Brilliant Tactician, different combat values may be modified per each character affected.


Yes. From the Brilliant Tactician description:

Replace the text on the card with: “Prerequisites: Outwit and Perplex Choose a character. Outwit does not need to show in the character’s stat slot in order for the character to use this feat. When the character uses Perplex, it may affect every target friendly character within 10 squares of it that shares a team ability with it. The character must have clear line of fire to each target.”

It being the character using Brilliant Tactician. All the targets must share the same TA as the character using BT.

One can always count on the NormView to save the day, right

thanks