Natsu dodges Laxus' lightning. This is simply a cleanup redo of the old calculation, but it will mostly be the same.

Natsu's Hand Width = 0.0889 Meters (3.5 Inches) = 88.685 px

0.0889 Meters/88.685 px = 0.00100242431 Meters per px

Laxus Hand Width = 99.86 px = 0.1 Meters

Natsu Height = 1.75 Meters = 652.75 px

1.75 Meters/652.75 px = 0.002681 Meters per px

Natsu Head = 69 px = 0.185 Meters

Natsu Leg = 183.134 px = 0.49 Meters

(Object Size in Meters)*(Panel Height in Pixels)/[(Object Height in Pixels)*2tan(70/2 deg)]

Panel Height = 508 px

Laxus Hand Width = 43 px = 0.1 Meters

Distance to Laxus' Hand = (0.1)*(508)/[(43)*2tan(70/2 deg)] = 0.84 Meters

Natsu's Head = 36.4 px = 0.185 Meters

Distance to Natsu = (0.185)*(508)/[(36.4)*2tan(70/2 deg)] = 1.844 Meters

Distance between Natsu and Laxus = (1.844 Meters)-(0.84 Meters) = 1.04 Meters

Natsu Leg = 0.49 Meters = 134.469 px

0.49 Meters/134.469 px = 0.003644 Meters per px

Distance Natsu Moved = 300.466 px = 1.09 Meters

((Distance the character moved in Meters)*(Speed of Lightning))/(Distance attack was from person in Meters)

Speed of Lighting = 440000 m/s

((1.09 Meters)*(440000 m/s))/(1.04 Meters) = 461153.85 m/s or Mach 1355.18 (Massively Hypersonic+)