Navi has similar firepower. You won't agree now because Fnatic plays better than Navi, but if you asked to compare these players last year, people would prefer the Navi players even though Leo was still playing well on Guild.
TL could have made a similar team by just picking up Sheydos or Trexx instead of Soulcas when they had the chance. (Yes, Cloud looks like a better option now, but back then, he wasn't considered better than Sheydos and Trexx).