Katha Chopais

Aiseyi sansaya keenha bhavaani | Mahaadev tab kahaa bakhaani
Mahaadev avagun bhavan bishnu sakal guna dhaam |
Jehi kar manu rum jaahi sana tehi tehi sana kaam ||

A similar doubt was expressed by Ma Bhavani (Ma Parvati) and then Mahadev (Bhagwaan Shiv) explained the matter in detail.
Mahadev may be full of faults and Vishnu may be full of virtues. But one is concerned with him alone who gladdens one’s heart.