DPS being flagged as tanks in Loatheb / Thaddius fights

Hi there,

I noticed top parses in the warrior tank category for Loatheb & Thaddius fights are not the main tank.

I looked thru top 10 alliance parses of Loatheb, none of them are the main tank of the fight, mostly just took the several seconds of aggro.

For Thaddius, a warrior was flagged as tank if he tanked the stalagg or feugen.

I am wondering if we should only flag tank for these two boss fights or other naxx boss fights based on how long player taking boss threat or taking most of damage from the boss.

Thank you.