She is good at both. She will do both in London. The only problem with her and the 100m has been her starts which have been very inconsistent over the years except 2010. Even though she was already "handicapped" by being in Lane 8 in the 100m final in Daegu, she still had the worst start/reaction time in the final. Due to her great top end speed, she was able to come back and grab a silver medal.She knows the start is the weakest part of her 100m race and thus, running indoor 60m does help in that area.
The only way VC has a chance of winning the 100m in London is for her having starts/races like these. Even then, if Fraser gets back to her 2008/2009, she will beat both VC and Jeter.
100m in Shanghai beating Jeterhttp://www.youtube.com/watch?v=bVbqFQMZVKs
100m in Eugene beating Fraser and Jeterhttp://www.youtube.com/watch?v=sVLV8XTlK_g