Too many variables still included. An Accent may have better power-to-weight ratios versus the Altis but we also need to take account the transmission type and its gear ratios. I'd agree with GH' comment that it's too small of a difference.
Ang tindi talaga ng performance numbers ng Accent Blue for its class. According to C-Magazine, it has 0-100 times of 8.8 seconds, top speed of 196km/h and power to weight ratio of 116.8ps/ton (1060kg minimum curb weight) as compared to the 101.2ps/ton of the Altis. And since pareho silang 4 speed A/T, sizeable na rin ang performance gap ng dalawa. Also, the Accent is better spec'd than the 894k Altis 1.6G A/T.