You mean HDMI out of microUSB, MHL?

Well, why there is no dual-core CPU in N9, although it was announced almost 1 year after Samsung Galaxy S2 was announced?

Why N9 has 1.4 Ghz CPU and Lumia has 1.5 Ghz CPU?

The answer to those, is Microsoft and Elop.
Full potential of Maemo/Meego was not even wanted to be demonstrated. N9 is about absolute minimum what was required in the Meego-contract between Intel and Nokia.