Except that "works better for me" has absolutely zero to do with being objective. As soon as you say "believe" and "better", that is by definition subjective. You cannot "believe" something is "better" objectively. One device can be objectively faster, objectively slower, objectively bigger, have objectively more ppi, objectively have better battery life under similar use conditions, or objectively cost more than another. Objective judgments can only be rendered on things that can be measured in a verifiable manner that can be reproduced, and only with those measurements.
"Better" is in and of itself a subjective term, because you cannot measure "better." I can say blue is a "better" color, and you can say red is the "better" color. The phones you see as better work better for your use case, for you. That doesn't give you dibs on objectivity.