Grammar synthesis: comparative

When synthesizing a comparative sentance of the form:
[noun A] is less [adjective B] than [noun C] one correct way to do it would be:
[noun A]は[noun C]ほど[adjective C]ではありません(or any other negative form of this)
An acceptable variation would be:
[noun A]は[noun C]ほど[adjective B, negative form]

The opposite of ほど would be より　if I remember correctly...
[noun A] is more [adjective B] than [noun C]
[noun A]は[noun C]より[adjective B]です(although this is just for politeness)