Findfirst Inconsistent return objects

so when running findfirst with just an ID i get the whole model back with all the functions.

when running findfirst with more advance finds, i get the Phalcon\Mvc\Model\Row class back.

Why is it not returning the whole model?

//Returns Row class
Accounts::findFirst(
            [
                'columns'   => 'id, firstName, lastName, userName, created',
                'conditions' => 'firstName = :firstName0: OR firstName = :firstName1:',
                'bind' => [
                    'firstName0' => 'jason',
                    'firstName1' => 'john'
                ]
            ]
        );

//returns account model class
Accounts::findFirst(1);