Hey there

SBI PO exam and CA are two different things. Entry in CA exams are easy but the whole course is one of the toughest course in the country. On the other hand SBI PO Is an exam having way more competition, syllabus is like CAT (though there is a big difference) with general knowledge questions which makes it a tough nut to crack. If you think you have interest in accounting and all the subjects of CA then go for it otherwise CA is not good for you. SBI PO if you think you have good quantitative, qualitative, English or if you think you can improve it then go for it.

Check the link

Good luck