Maybe if you considered the fact that he has trained during the time skip then it doesn't seem that ridiculous.

Its like Oda suddenly shifted gear and we are speeding up ala tesla ludicrous mode style.

- Something wrong with Sabo and vivi?
- Shichibukai vs marine fights going on everywhere.
- Blackbeard on the move to snatch up a few people ( the word they was used)
- Drake was a marine undercover spy. (could he be the one who help law escape?)