Hey there, kingicev.
Basically the SSHDs (a.k.a. hybrid drives) stand somewhere in-between HDDs and SSDs in terms of performance. They are "faster" than hard drives, but can't compete with SSDs. What makes them "faster" than a regular hard drive is that SSHDs have an HDD part and a small SSD part. The flash memory of the SSD part is used for caching - it stores the most commonly accessed data there and you can get to it much faster than with an HDD. However if you constantly use different data on a regular basis, you might not benefit from it that much.
As for the exact numbers between the 2 drives, you should check the specific models you're referring to. Here's a website, which has data collected from users and you might be able to...