We may need to consider this in terms of wet-bulb temperature, temperature combined with humidity. I think the Aseels are more tolerant of higher wet-bulb temperatures during periods of exertion when compared to bankovid type games. During periods of exertion when wet-bulb temperature is not high the Aseel enjoys no advantage. The bankovid types are better at surviving outside the pit when wet-bulb temperatures are low for a suite of reasons. The bankovids have better tolerances to exposure with elements and based on what I think I am seeing, the bankovid games are more flexible in their feeding requirements and can meet their needs in a semi-feral setting which has been a strong selective force on them all along. The Aseels have been babied in some ways. The care regimen I am advised to follow certainly supports this. Videos I see from Pakistan and India also indicate their needs are very closely catered to.
My Aseel bullstag tolerated temperatures as low as 0 F / -18 C and has ancestors that survived -11 F / -24 C in the last 10 years. When the same Aseel line was first brought over from India / Pakistan during the 1980's, that had very poor winter tolerances where half supposedly died each winter during the first decade. I wander what types of changes were selected for to promote better winter survival.
@Kabootar there are multiple variations on the Aseel, even in India / Pakistan. I bet if like in the states, people keeping one variant will not respect other variants as Aseel. It is easy to see a similar pattern on this forum alone and it exists among the many of the gamefowl people in the US. The bullstag I have is reputed to be pure by someone I trust very well and who acquired them from a sibling that brought them over as hatching eggs. The person that brought them over had interested in what he got because they were used in the gaff rather than naked heel. That use would have selected for quicker and more agile birds.