Okay, so If I think he is 3-4 in most areas like reading, math, colors, academic concepts but not advanced at all in areas like verbal expression and walked a little late (16 mo) does that either not make him gifted but savant like in a way? splinter skills or something? I'm SO confused like he is in the middle all the time, swaying me back and forth. But SO advanced in areas like math, reading, spelling, writing, languages.
Dd11 didn't walk until 15.5 months although she was speaking in sentences by then. She also didn't learn to ride a bike until 10 -- after she started 6th grade. She's probably a level 4 on Dr. Ruf's charts although I don't know how much stock I put in those levels. I would say that she is HG, though & her achievement scores definitely back that up. Her one IQ test, done at 7, had such wildly divergent scores that I don't know how much I'm counting on the accuracy of the total score, which put her at MG. I absolutely wouldn't say that your ds isn't gifted b/c he has wildly divergent strengths & weaknesses. That is very, very typical in gifted kids.