The problem with wet leaves, is the fact that once the tire bites into the first layer of wet leaves, there's usually a second wet layer underneath that one. There's the wet pavement underneath a layer of wet leaves, which is underneath another layer of wet leaves, and so forth and so on...
The poor tire just doesn't have a chance, even if it's an excellent tire, otherwise...
* Once you've gotten to the bare wet pavement, just about any touring tire should be sufficient.