Art comes in all shapes and forms. It's how the viewer perceives it; this means 'Drawing by hand' != always necessarily better than pixel art or any other form of art. This is a community based around pixel art in the majority and you'll see why people may not appreciate your work as much compared to Ivy's.

Also, it's kind of pathetic making a thread urging people to say 'tell this person my work is better', unless it was a friendly art battle thread. Like vici said, be the better man and ignore the negativity - there is a block button on most social media applications