JRE performance respect to J2ME

Question

I benchmarked this recursive code :
    public static long fib_recur(int n) {
        if (n <= 1) return n;
        else return fib_recur(n-1) + fib_recur(n-2);
    }and the performance for J2SE 1.5 was 10 times slower than J2ME on the nokia 6030, motorola C385 and siemens C72,all low end phones.
But the iterative version was 4 times quicker in J2SE, is this performance diffence normal, one would expect a P4 to be quicker than a phone.

Answer 1

I benchmarked this recursive code :
    public static long fib_recur(int n) {
        if (n <= 1) return n;
        else return fib_recur(n-1) + fib_recur(n-2);
    }and the performance for J2SE 1.5 was 10 times slower than J2ME on the nokia 6030, motorola C385 and siemens C72,all low end phones.
But the iterative version was 4 times quicker in J2SE, is this performance diffence normal, one would expect a P4 to be quicker than a phone.