That's completely different.
Luffy chose to immediately use G5 against Lucci without feeling out his power first. We can say he simply wanted to test it out some more.
In this chapter they felt the Haki and attack from Gaban and then Zoro even decided to use aCoC right off the bat while Luffy at the same time jumped immediately to G5.
Luffy chose to immediately use G5 against Lucci without feeling out his power first. We can say he simply wanted to test it out some more.
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In this chapter they felt the Haki and attack from Gaban and then Zoro even decided to use aCoC right off the bat while Luffy at the same time jumped immediately to G5.