I assume that Blizz is attempting to balance the battlegrounds in terms of exp gained per time spent, but it's unrealistic to expect that they will be successful (especially right away). So, which 2 battlegrounds do you think will give the best experience (and therefore likely become the most popular for people trying to level up through pvp)?
It would be nice to hear from someone below level 80 who has actually been on the PTR and experienced the battleground system. If you haven't been on the PTR just guess.