Yes,at the time at Marineford, Garp could have killed Akainu.
Luffy's grandfather, Garp rules supreme as the strongest Marine in One Piece. Although just a Vice-Admiral, Garp's strength surpasses that of all the Admirals in the story, as evident from the fact that he could fight the likes of Roger on an equal footing.
Garp in his prime was as strong as Roger. And Sengoku being his companion was probably in the same ballpark. He might have weakened a lot due to old age, but Sengoku stopping him from killing Akainu during Marineford suggests that he is still among the top fighters in One Piece and can at least face Admirals.
In One Piece, the Admirals are the Marines' most powerful weapons against pirates....One Piece: All The Marine Admirals In The Story, Ranked By...1 Sengoku.2 Sakazuki. 3 Kuzan. 4 Borsalino. 5 Issho. 6 Kong. 7 Ryokugyu. 8 Zephyr. Sep 2, 2020
Garp wanted to remain a vice-admiral because he didn't want to be under the direct control of the World Nobles of Mary Geoise. Garp has no intention of obeying the commands of the World Nobles. So, he rejected promotions to remain a vice-admiral.
One Piece: 5 Characters Who Could Beat Prime Garp (& 5 Who Couldn...3 CAN'T BEAT: DRACULE MIHAWK.4 CAN BEAT: ROCKS D. 5 CAN'T BEAT: MARCO. 6 CAN BEAT: SHIKI. 7 CAN'T BEAT: SILVERS RAYLEIGH. 8 CAN BEAT: WHITEBEARD. 9 CAN'T BEAT: SENGOKU. Sengoku is the former Fleet Admiral of the Marines. 10 CAN BEAT: GOL D. ROGER.
Since Whitebeard in his prime might have even been above “normal yonko level”, Garp might as well have been above yonko level. Before the timeskip he was still very powerful, but like he said himself in Water 7 he lost some of his strength compared to his prime.
The only thing that's stated is Garp being far more powerful than any Vice-admiral. That's not that impressive since just about anyone who holds the rank of admiral or fleet admiral highly surpasses the Vice-admiral level. Akainu on the other hand has a range of abilities.
Garp wanted to remain a vice-admiral because he didn't want to be under the direct control of the World Nobles of Mary Geoise. Garp has no intention of obeying the commands of the World Nobles. So, he rejected promotions to remain a vice-admiral.
Here are 5 One Piece characters who can take on an Admiral and 5 who stand absolutely no chance against their mighty power.3 Can't: Trafalgar Law.4 Can: Luffy. 5 Can't: Oven. 6 Can: Katakuri. 7 Can't: Baron Tamago. 8 Can: Marco. 9 Can't: Caribou. 10 Can: Sabo. Sabo is the right-hand man of Monkey D.
three French semi-vowels“The Sounds of French”: If you watch about the first minute of this clip, you'll get a breakdown of the three French semi-vowels—how they're pronounced, how they look in IPA and how to distinguish them from similar sounds.
As adverbs the difference between frequently and commonly is that frequently is at frequent intervals while commonly is as a rule, frequently, usually.