Both have similar value But i prefer steemit to use for newbies specially because to build earning on google Adsence you must need More More knowledge
Some skills you need as a adsence workers
1 Seo
2 Article Writing
3 A domain
4 Daily posting on blog
5 Huge traffic
Now we compare Adsence to Steemit what we need
1 No high level of skills
2 Tricks to use bots
3 A network of High steem power friends
4 A good steem power So people will love to have friendship with you
At the end if you have lot of skills Join Adsence otherwide Stay With steem And steemians ..