Practically, I deleted the ": " after "*", in order to be same alignment and spacing as in the case of "**".
Nice catch, I've removed it and now it's tidied up. 
Basically, I'd say to let everyone vote the preferred mark for this explorer... That would simplify the two questions into a single one
But that would add more options to our survey. We can do it according to your suggestion and add an option to vote for a single mark.
Our survey would look like that:
- Rating from Blockchair Bitcoin Block Explorer 7 points?
- Rating from Blockchair Bitcoin Block Explorer 8 points?
- Rating from Blockchair Bitcoin Block Explorer 9 points?
- Rating from Blockchair Bitcoin Block Explorer 10 points?
(suggested by GazetaBitcoin)
- Removing "comments" column from our table - Yes
- Removing "comments" column from our table - No
(suggested by several members)
- Including comments in "hover format" - Yes
- Including comments in "hover format" - No
(suggested by SFR10)
I've also added 7 points if someone wants to lower the rating for whatever reason.
Did I got it right?