No
Coby was only ever mentioned for saving civilians. Where as Law was credited with masterminding the whole Rocky port incident, Looking for poneglyph in Hachinosu which was most likely in the possession of Wank shi, and was literally said to have made an alliance with BB.
Law has no need to make an alliance if he just took the hearts of 100 fodder pirates. Meaning he did something else on the island. An alliance in op usually about defeating a common enemy. Just look at Law's other alliance where he and goofy took down Doffy.
And BB respects Law a lot in their fight in Winners island. No reason to respect him if he just took 100 hearts and dipped.
Oda doesn't give much of a shit about powerscaling. He can retroactively make Fullalead Law super strong. Which would just upscale Doffy and current Law anyways.
Oda frequently wanks the warlords. So having a chance to upscale two warlords at once is a golden opportunity for him.
In conclusion. You are super biased and a Law hater.