That's embarrassingly bad performance for the XBO browser, although even the PS4 is bested in both tests by the iPhone 5 (and all A6/A7 iPhones and iPads) and most Androids with an S4 Pro or better.
I decided to run the benchmarks on my 4.6 Ghz Ivy Bridge i7 desktop and got the following results:
Sunspider 1.0.2: 64.9ms (with IE 11)
Kracken 1.1: 990.3ms (with Chrome 31)
Sunspider is about 85ms with Chrome 31, and Kraken is around 1500ms with IE 11.