let's explain it, shall we?
Lati v lati= latias>latios
why? simply because latias has a greater spcl.def, so who gives a care if lati keeps dragon clawing you, calm mind's eventually gonna cover it up anyway, not to mention recovering- thatsa heck lot of damage to get back after 3 calm minds...
and then we have the ancient chinese secret of sweeping, passed from generation to generation that finally, after a delay, falls into the hands of latias. so, in short....
latias>latios
If you see me posting, it's because I've been asked to. Which I guess would mean I'm taking requests.