No, it is the same. If its more than several dates, you need to tell in person.
Although, among the very yeshivish where I think they don’t ever “drop the shadchan”, I think it may be acceptable to break up via shadchan.
Zeh ha’klal, breaking up after more than several dates has to be done in the same format that you’d get engaged. If you would get engaged via shadchan, you can break up via shadchan. If you would get engaged via text, you can get engaged via text. If you would get engaged by ignoring her calls, you can break up by ignoring her calls.