the same as:和．．．一样．还可以表示如同．．．一样．
His car is the same as mine.这里不能用to.
For example:His answer was totally the same as what I had thought.他的回答完全如同我想的一样．
the same to:
对话,A：Have a good day.B:The same to you.
在这里,需要强调的是,the same to 多用于口语中．在本句中,可以有另外一种同样的回答：you too 表示,你也一样．
(英语这东西可以活用的,掌握了一些词汇之后要灵活去运用,有时候口语中不要束缚于语法)