It'll be more feels like one exchange, exmarket is (in)famous for failed or PnD projects that I advise to leave them and chase better exchanges (if there any reachable within the timeframe). If there were none, I actually suggest to go solely with latoken. Just my 2 cent, though.
Exmarket is a very popular exchange. There are a log of projects on Exmarket. Trading volumes on Exmarket are good and a good liquidity. I think the more exchanges will be for the listing of the token the better will be for liquidity.
Interesting opinion. Perhaps chasing this discussion would lead to an OOT subject, but I frequently stumbled upon investors on telegram and other channels who got dismayed upon exmarket, either for the lost fund, high withdrawal fee, or bad future of projects who launched their IEO on them. Moozicore, for example. Can you please perhaps name one or two projects that's launched their IEO on exmarket and managed a steady development and growth?