Since OP said that he will add esport but he still not do it yet and I also doing comparisons on esport too. I decided to shared it here.

I have to included 1xbit here because It provide biggest coverage in esport. Can't skip them sorry.

ESPORT:
- = Not available.

|	Sportsbook	|	Match Winner Margin	|	Over/Under Margin	|	Handicap Margin	|
|	Buff88	|	5.88%	|	6.25%	|	6.21%	|
|	1xbit	|	7.40%	|	9.77%	|	8.56%	|
|	mBitCasino	|	5.88%	|	6.25%	|	6.21%	|
|	Nitrogen	|	5.97%	|	-	|	-	|
|	Sportsbet.io	|	5.90%	|	7.86%	|	7.97%	|

Now compare with real money sportsbook.

|	Sportsbook	|	Match Winner Margin	|	Over/Under Margin	|	Handicap Margin	|
|	bet365	|	7.61%	|	9.11%	|	5.79%	|
|	Pinnacle	|	4.87%	|	-	|	4.78%	|
|	gg.bet	|	5.53%	|	7.53%	|	7.41%	|

Overall: esport have extremely high margin. Even Pinnacle have 4.87% margin. I hope in future some sportsbook can step up and give better margin than this.

Update
This time I'll use Astralis vs Liquid as the reference of comparisons. It's 5 stars match and one of the best match in this month. So I think all sportsbook will make their margin better than old one

spoiler: yes they did. even without any comparisons I clearly see one sportsbook have as good odd as pinnacle

- mean Not available.
= mean odd is same (look at percentage and it will tell which one is duplicate)

|	Sportsbook	|	Match Winner Margin	|	Over/Under Margin	|	Handicap Margin	|
|	Buff88	|	6.21% (=)	|	6.53% (=)	|	6.44% (=)	|
|	1xbit	|	4.38%	|	8.23% (=)	|	8.82%	|
|	mBitCasino	|	6.21% (=)	|	6.53% (=)	|	6.44% (=)	|
|	Nitrogen	|	-	|	-	|	-	|
|	Sportsbet.io	|	5.88%	|	8.23% (=)	|	8.23% (=)	|

Overall: I don't have time to do real money sportsbook comparisons but I can tell that 1xbit match winner margin is less than Pinnacle (4.83%) but Over/under and Handicap still have high margin.

Important reminder
1. mBitcasino and Buff88 are using same odd provider.
2. mBitcasino and Buff88 are using same software.
3. mBitcasino and Buff88 are both under Galaxy Group.