Question

Why is the inner join the recommended option ? I know Microsoft recommends this way but no where can I find a reason ? According to the execution plan both are the same and both cost 50%

SELECT t1.en [Em], t2.en [Ma] FROM E t1, E t2 WHERE t1.mid = t2.eid

order by t1.en

SELECT t1.en [Em], t2.en [Ma] FROM E t1 inner join E t2 on t1.mid = t2.eid

order by t1.en