Well, the above rating would go to the A/C bus, as they accommodated me in A/C bus without any additional charge due to their internal limitations. So, the experience in A/C bus was far better than the the non-A/C in terms of comfort. I normally prefer train journey vs. Bus, for comfort and convenience; and was quite skeptical @ the beginning, but I had to book bus anyway due to non-availability of trains @ the time I was looking for. Overall, if was fair experience considering mine was first long bus journey ever.