Main difference is that Sigwit block size is 2MB as a result difficulty level for mining it is easy and hence transactions are fast.
There are no segwit blocks. And no, we don't have 2MB blocks.
You are talking about the SegWit
2x fork which should have happened a week ago. (The
2x stands for 2 times blocksize (2MB))
This is a very confused sounding exchange of posts, neither of you are getting the details correct.
There are (were) 2 entirely different proposals:
- Segwit (4MB blocks)
- Segwit2x (8MB blocks)
Segwit was a soft fork, and is now activated on the Bitcoin network. Segwit2x was hard fork, and was abandoned by it's developers and the miners who agreed to implement it.
This makes talk of 2MB blocks (finally) irrelevant; the max blocksize is now twice that at 4MB.