Is Islam better than communism?
better comparison is to fascism
If they implement it correctly, both are deadly.
No.
~Is Islam better than communism?~
I don’t want to look like a communist sympathizer but yes, communism is better than islam.
Both are as much a failure in short to mid-term but unlike islam, communism tends to republican form of government and also communists thinks high about education which is not the case for islam.
Both features are also a primary reasons why communism cannot exist in a long run, because being applied to a primitive society, it produces a number of smart people who tends to see bullcrap behind the rest of a communist ideology. And said societies already have executive, legal and civil judicial system largely similar in form to the free world. All communist societies are republics, there are no socialist kingdoms or theocracies, so all they need is to fix rules.
I short, to transform a communist society into a free republic, given you have enough open-minded people, you need free elections to make your Soviet into Parliament and break a one-party rule and to make courts independent from an executive branch.
It is not if it is that easy but the road to freedom is much shorter for post-communists than for typical 7-th century feudal theocracy, which is an average muslim society is.