If by texting you mean SMS, they are at a par with each other.
RCS? Me personally I don't like it and don't use it (long story but relating to both sender and receiver need to have RCS turned on and if you then send that person an SMS it seems to have an issue and vice versa so I stopped using it). But from what I've seen on here, some prefer Samsung, some prefer Google.
Overall though, don't think there is much in it.
I am not employed by Samsung nor do I receive any remuneration as a Samsung Members Star.
My device is an S25 Ultra.