From https://balancedpayments.com "no redirects. no iframes. no external accounts." That's the unqiue, killer feature right there. If some M&A were to happen between those companies, the existence of this feature is imperative. Specifically, if I have a marketplace I don't want my customers to do any more than a) type their paypal email or b) type their bank account details.

Edit: if you happen to seriously be confused by what I've written, please visit the url and ctrl/cmd f for the quote. Then, take a look at what is below. That is,

  curl https://api.balancedpayments.com/v1/credits \
    -d amount=10000 \
    -d description="Math lesson" \
    -d bank_account[name]="Johann Bernoulli" \
    -d bank_account[account_number]=9900000001 \
    -d bank_account[routing_number]=121000358 \
    -d bank_account[type]=checking \
    -u 7b7a51ccb10c11e19c0a026ba7e239a9:

You can't do that in Stripe. If you want accomplish the same effect using Stripe, however, your customers will need some kind of account which is external to your site and/or a redirect. Does that help?