Arnold upsets him more than Roland does (6)

I believe the answer is:

ronald

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'him more than roland does' is the definition.
The definition suggests a singular noun which matches the answer.

'arnold upsets' is the wordplay.
'upsets' is an anagram indicator.
'arnold' is an anagram of 'RONALD'.

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(Other definitions for ronald that I've seen before include ". . . . . . Reagan, former US president" , "The late President Reagan" , "Mr Reagan" , "Chap" .)

I've seen this clue in the Evening Standard.

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