Presence of cerebral microbleeds is not associated with an increased risk of poor 3-month outcomes after tPA for acute ischemic stroke

I'm only really interested in the first statement. So not only does tPA have a full efficacy rate of 12%. 30% should also be considered a failing percentage. It may be the best there is but that is appalling.
Would you go to a doctor that had either a 30% or 12% success rate?
http://strokeblog.strokeahajournal.org/2015/08/presence-of-cerebral-microbleeds-is-not.html
Patients who receive intravenous tPA within 3 hours are 30% more likely to have minimal or no disability at 3 months – but does this hold true for every patient with an acute ischemic stroke? What if a patient’s initial MRI has cerebral microbleeds – are these patients at higher risk for hemorrhage and poor functional outcome?