Java implement a web service client

Exist two common ways to create webservice client in java it's Axis 2 or JAX-WS. What is the best approach? here is performance comparison, it says that JAX-WS is much better (about twice). Below is the comparison table.

test case	Axis2		JAX-WS
	TPS	stddev	TPS	stddev
echoVoid	11712.373	90.376	19620.673	48.772
echoInteger	8753.796	13.278	17798.787	18.859
echoFloat	8840.666	22.376	17613.225	56.008
echoString	8728.365	17.779	17696.861	7.601
echoDate	8175.369	27.88	17137.887	19.917
echoStruct	7761.562	26.211	16753.703	90.206
echoSynthetic1K	6599.274	24.458	12754.212	162.251
echoSynthetic4K	4004.815	3.561	7701.041	18.397
echoSynthetic8K	2773.538	0.541	4867.424	38.1
echoSynthetic12K	2071.586	2.372	3343.501	48.81
echoArray40	1640.998	0.489	2375.238	1.419
echoArray80	923.301	1.065	1258.433	7.039
echoArray120	643.322	0.166	850.133	3.641
echoOrder200	516.847	0.218	715.522	2.389
echoOrder500	210.802	0.022	284.707	0.192

where 'TPS' stands for 'transactions per second' and 'stddev' is the standard deviation between different runs.