What is faster 3.4 ghz Pentium D or the Core 2 duo 2.3 ghz

Core 2 duo 2.3 ghz is faster than Pentium D, because it has already 2 processors

^ the above statement is totally incorrect. The person that wrote it seems to not realize that Pentium D is Pentium 4 Dual Core. So 3.4ghz DUAL core is FASTER then a 2.3ghz DUAL core