Based on other people's curation habits
Based on content length
Based on perceived content "quality"
Based on not "over rewarding" content

All crap...

If an author is getting engagement. If he/she is creating something valuable that other people are engaging with... That's how I value content.

Same here. I doubt the majority of the fatty whales are considering that when casting votes. Most of them are probably still "running on the old wheels".