Who is the "king" of tigers? - Bengal or Amur

[Pckts]

One example isn't a conclusion for either species, many parks have their own feeding regiments for each cat.  Although I've read Amurs do put on fat easier than other tiger subspecies but I haven't seen any concrete evidence of this. But the colder the climate the more fat needed to maintain body heat. So it's most likely the case that an Amur living in warmer climates will have less fat than an Amur living in colder climates.
In regards to winter and summer weights,
You can say the same for Bengals as they are heavier in the winter compared to the summer heat. Reply