### simply_full for expressions with exponents

Hello,

I am new to sage and I am trying to simplify some expression.
If I try:

var('a');
h = 2^(a - 2) * 3^(a + 3) / 6^a;
h.simplify_full();

I get 27 / 4 which is right. However if I try

var('a');
h = (2^(a - 2) * 3^(a + 3) / 6^a == 27 / 4);
h.simplify_full();

I get (27/4) == (27/4). I don't understand why I do not get
the answer True in this case.