MsFriz,
I have been reading on early signs since mine is a toddler and Ruf sets the stage with if good in one and not the other than their level would be lower BUT I really think that is more school age and not toddlers. This said I think you can't lump children in groupings and leave it at that. You will always have the exception. The kid that showed a strong ability in verbal up through 2nd grade and then he/she takes off in math. Time will tell how advanced he is in math and the best thing you can do is provide him the resources when he is interested.
And I totally agree with Dottie about preschool teachers and teachers for that matter. I would take their advice absolutely because they might have some great recommendations but always with thoughtfulness and not allowing their advice to be the deciding factor. Will that goes for anyone doesn't? We should more so be collecting information and not relying on just one for the answer but taking it all in and drawing conclusions of our own.