Maybe not. When you query me for a novel and mention you've been previously published the very first thing I do is look up the publisher, publication year, and sales stats.
I have had several full requests from agents. They all connected strongly with my premise. They all complimented my voice and writing. They all passed.
At this point, I have to conclude (because agents are not much for specifics) that there's something off with my execution. Therefore, I'm back to reworking.
I know the queries and concepts were good because I had so many requests. I know I can write because I've had books published before.
No matter how well you write, it's tough to revitalize a career after a long fallow period, or if you've got books that haven't sold well.
Yes, it can be done. Yes, I've done it.
BUT it's difficult and time consuming, and most important: a whole lot harder than selling a debut writer.
It helps if you've got a new book that is flat out amazing.
It helps if you're writing in a new category.
It will probably help if you're willing to write under a new name.
But, when I'm reading your query and looking up your sales, most often my thought is "am I up for this?" and a lot of times the answer is "no, I'm not."
Thankfully, there are other agents out there to query, some of whom might be younger and hungrier than I am. Or who have a brilliant idea about how to resuscitate your career. Or who love your work so much they just HAVE to sign you up.
This is yet another reason you query widely, that you don't have a dream agent such that anyone else feels like settling, and you understand that if you've got a track record, it isn't always about the writing.