A lot of people who only played BW2 have said this, but honestly in BW1 it was "good", that's it, it had solid Checks and Counters but it was still a good consideration for your team, lets not forget that it had heavy competition from chomp and exca early BW1, effectively reducing it's shot at being a full metagame feared threat until veil chomp (not RS chomp) and exca were banned AND it received sheer force, until all of that, lando-i honestly was just "good" in BW1 and pre-sheer force era, after sheer force, it was not really "metagame definning" after BW2 got somewhat semi stablized (tornadus-t, gene AND deo-d were banned before it was even considered as meta definning, talk about late to the party) and even then it's checks were already awesome ass pokes to use in OU like latias and celebi, the uturn set got revenged and the RP set had big problems breaking down the aformentioned checks to it. It was metagame defining (even then keldeo was about as much as a force in the metas as much as it), but only enough to get banned, when you see all these "titans" and metagame forces up in the current top 7, do you really think Lando-I can fit in? or is it time for something like keldeo or terrakion to take the spotlight (lando-i was of titan relevance really only in it's own stage, keldeo and terrak were titan relevant in 2+ stages)
voting Latias though, terrak deserves it, but excadrill, blaziken and veil chomp stages hurt it bad, while latias was consistently awesome in all the stable shifts of OU (pre stage blaziken/excadrill doesn't really count imo as it was barely a "metagame" as much was it was a broken playground for threats to run around it)
Latias was possibly the most consistant special wall in the OU tier, not only that, but it was a good one too, it could become a very terrifying bulky booster sweeper with it's infamous CM and subCM sets, or go on the offensive with bulky specs or bulky LO, LOLati was amazing, it was a defensive and offensive check to so much pokemon, while constantly pressuring the opponent to lose something, or take like 40-100% on their steel(depending on what steel it was) from HP fire. Lets not even mention that it checked like 75% of the suspects this generation.