The Lightning Count vs the Stardust Knight in a 1 on 1 Battle, both using nothing but a Leo!
As usual, please judge by logic and keep your personal favour for "who do you like best" polls, read the descriptions carefully and make your opinion.
Zechs Merquise, originally Milliardo Peacecraft/Darlian of the sanc Kingdom recieved his name Lightning Count in battle for "fighting like lightning", crushing an uprising force with ease while fighting for OZ. Most people know his exploits in the Gundam Wing series in which Zechs plays the main rival of the series' main protagonist Heero Yui. After encountering the Gundams he used the Tallgeese to seek out and challenge them multiple times throughout the series, and did stand his ground. Zechs is without doubt a skilled pilot and recognized by the W fanbase as one of the most skilled pilots, also being one of few people capable of utilizing the ZERO system. Towards the end of the series, Zechs self destructs his Gundam in Heero's stead durin the final battle, he also appears in the Endless Waltz movie as "Preventer Wind" piloting Tallgeese III.
Roche Nattano, the leader of the aristocratic trio known as the "Stardust Knights" is a gentleman and fights and lives with his own code of honor. Upon meeting the Gundams of MO-V he insisted that the Leos shall truimph over them, and they managed to keep up - and even technically defeat the Gundam Geminass 1 (NOTE: Geminass 1 has almost twice as much power as the Wing Gundam Zero Heero piloted in the Endless Waltz movie!) in his customized Leo unit. After Valder's appearance and Kratz's betrayal, Roche changes sides piloting the L.O. Booster equipped Geminass 1 himself, he dueled his former fellow Stardust Knight Kratz in a much much more superior Gundam to keep him off the Barnett brothers so they could take care of the incoming swarms of the enemies and Valder himself. Though eventually defeated by Kratz, being able to handle the speed of L.O. Booster while piloting speaks for his exceptional skill.
For the confused W fans who don't know Roche (likely the majority over people who don't know Zechs), he didn't appear in the TV series.
But if he did Dorothy would like him it seems :P