Also, the actual report is here:
http://www.visionmobile.com/rsc/researchreports/VisionMobile...
Other points from the (CC/BY) report:
Platform revenue potential. Not all platforms are born with equal revenue potential. Our research revealed large discrepancies across platforms in terms of the revenues applications are bringing to developers. iOS topped the chart, making 3.3x more money per app than Symbian developers followed by Java ME (2.7x) and BlackBerry (2.4x). Android (1.7x), mobile web (1.6x) were the weakest performing platforms in terms of revenue per app and only ahead of Symbian (1.0).
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App store fragmentation is an under-hyped challenge for developers. Each of the fifty-plus app stores available has its own developer sign-up, app submission process, artwork and paperwork requirements, app certification and approval criteria, revenue model options, payment terms, taxation and settlement terms. The marginal cost of distributing an application through one more app store is significant, contrary to popular perception.
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Platform priorities For companies going mobile, platform priorities are mixed, but the core challenge is common – market penetration and reach across the customer base. Organisations developing B2C apps (targeted at consumers) are extending their offering first Apple and then to Android, to mobile web, to BlackBerry and finally to Windows Phone 7. For B2B apps (applications paid by the corporate IT manager or CIO), HTML is already the platform of choice- not just for deployment on mobile web browsers, but also by converting HTML and JavaScript into native iPhone and Android apps using tools from companies such as Appcelerator, PhoneGap, RhoMobile and Sencha.