Grammatically, no, but in real sense, the comparison is the important thing here. 'I can compare nothing with friendship' is essentially the same in meaning as saying 'nothing can be compared with friendship.'
And I also think that 'comparari potest' is ok.
comparo is often used with the gerund/gerundive comparandus, so a passive infinitive seems no stretch. parari is common enough...
The only thing we can guarantee when communicating via the internet is that we will be almost completely misunderstood, and likely cause great offence in doing so. Throw in an attempt at humour and you insure a lifelong enemy will be made.